Process for the dyeing of polymers of propylene, butene-1 and 4-

Details Process for the dyeing of polymers of propylene, butene-1 and 4- Process for the dyeing of polymers of propylene, butene-1 and 4-

1988-10-06

1989-10-10

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Nontextile, dyeing process or product, including inorganic...

Olefin polymer substrate or rubber

8506, 8654, 8657, 8928, C08L 2302, D06P 141, D06P 379

Patent

active

048728802

ABSTRACT:
A process for the dyeing of polymers of propylene, butene-1 and 4-methyl-pentent-1 is disclosed. The process involves contacting articles of the polymer with an aqueous dyebath containing a basic dye in a concentration of at least 0.4 g/l and at a pH of at least 5.0. The temperature of the aqueous dyebath is at least 90.degree. C. The article is maintained in contact with the dyebath for at least 10 minutes. The polymer of propylene is preferably a blend of 50-99 parts of a homopolymer of propylene or copolymer of propylene and ethylene with 1-50 parts of a zinc ionomer or graft copolymer of a hydrocarbon alpha-olefin with an alpha-olefin having carboxylic acid or carboxylic acid anhydride. Dyed polymers are obtained.

REFERENCES:
patent: 3256364 (1966-06-01), Bryant et al.
patent: 3264272 (1966-08-01), Rees
patent: 3388190 (1968-06-01), Bryant et al.
patent: 4320046 (1982-03-01), Havens
patent: 4612155 (1986-09-01), Wong et al.
patent: 4732571 (1988-03-01), Boocock et al.
patent: 4737547 (1988-04-01), White

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